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moby--moby/integration/container/diff_test.go
Yong Tang 9537498ced Migrate container diff tests in integration-cli to api tests.
This fix migreates container diff tests in integration-cli
to api tests.

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
2018-02-15 01:03:29 -08:00

98 lines
3.5 KiB
Go

package container // import "github.com/docker/docker/integration/container"
import (
"context"
"testing"
"time"
containertypes "github.com/docker/docker/api/types/container"
"github.com/docker/docker/integration/internal/container"
"github.com/docker/docker/integration/internal/request"
"github.com/docker/docker/pkg/archive"
"github.com/gotestyourself/gotestyourself/poll"
"github.com/gotestyourself/gotestyourself/skip"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
// ensure that an added file shows up in docker diff
func TestDiffFilenameShownInOutput(t *testing.T) {
defer setupTest(t)()
client := request.NewAPIClient(t)
ctx := context.Background()
cID := container.Run(t, ctx, client, container.WithCmd("sh", "-c", `mkdir /foo; echo xyzzy > /foo/bar`))
// Wait for it to exit as cannot diff a running container on Windows, and
// it will take a few seconds to exit. Also there's no way in Windows to
// differentiate between an Add or a Modify, and all files are under
// a "Files/" prefix.
lookingFor := containertypes.ContainerChangeResponseItem{Kind: archive.ChangeAdd, Path: "/foo/bar"}
if testEnv.OSType == "windows" {
poll.WaitOn(t, containerIsInState(ctx, client, cID, "exited"), poll.WithDelay(100*time.Millisecond), poll.WithTimeout(60*time.Second))
lookingFor = containertypes.ContainerChangeResponseItem{Kind: archive.ChangeModify, Path: "Files/foo/bar"}
}
items, err := client.ContainerDiff(ctx, cID)
require.NoError(t, err)
assert.Contains(t, items, lookingFor)
}
// test to ensure GH #3840 doesn't occur any more
func TestDiffEnsureInitLayerFilesAreIgnored(t *testing.T) {
skip.If(t, testEnv.DaemonInfo.OSType != "linux")
defer setupTest(t)()
client := request.NewAPIClient(t)
ctx := context.Background()
// this is a list of files which shouldn't show up in `docker diff`
initLayerFiles := []string{"/etc/resolv.conf", "/etc/hostname", "/etc/hosts", "/.dockerenv"}
containerCount := 5
// we might not run into this problem from the first run, so start a few containers
for i := 0; i < containerCount; i++ {
cID := container.Run(t, ctx, client, container.WithCmd("sh", "-c", `echo foo > /root/bar`))
items, err := client.ContainerDiff(ctx, cID)
require.NoError(t, err)
for _, item := range items {
assert.NotContains(t, initLayerFiles, item.Path)
}
}
}
func TestDiffEnsureDefaultDevs(t *testing.T) {
skip.If(t, testEnv.DaemonInfo.OSType != "linux")
defer setupTest(t)()
client := request.NewAPIClient(t)
ctx := context.Background()
cID := container.Run(t, ctx, client, container.WithCmd("sleep", "0"))
items, err := client.ContainerDiff(ctx, cID)
require.NoError(t, err)
expected := []containertypes.ContainerChangeResponseItem{
{Kind: archive.ChangeModify, Path: "/dev"},
{Kind: archive.ChangeAdd, Path: "/dev/full"}, // busybox
{Kind: archive.ChangeModify, Path: "/dev/ptmx"}, // libcontainer
{Kind: archive.ChangeAdd, Path: "/dev/mqueue"},
{Kind: archive.ChangeAdd, Path: "/dev/kmsg"},
{Kind: archive.ChangeAdd, Path: "/dev/fd"},
{Kind: archive.ChangeAdd, Path: "/dev/ptmx"},
{Kind: archive.ChangeAdd, Path: "/dev/null"},
{Kind: archive.ChangeAdd, Path: "/dev/random"},
{Kind: archive.ChangeAdd, Path: "/dev/stdout"},
{Kind: archive.ChangeAdd, Path: "/dev/stderr"},
{Kind: archive.ChangeAdd, Path: "/dev/tty1"},
{Kind: archive.ChangeAdd, Path: "/dev/stdin"},
{Kind: archive.ChangeAdd, Path: "/dev/tty"},
{Kind: archive.ChangeAdd, Path: "/dev/urandom"},
}
for _, item := range items {
assert.Contains(t, expected, item)
}
}